Polo mallet head



H. P. NELSON July 1s, 1933.

POLO MALLET HEAD Filed NOV. 2l, 1931k 5 paio.

y Patented iuiy is," f j f A HANS r. ivELsoN, oFGnANTwooD, i Nnw JERSEY 1 Trono iiiAIjLiir riminiy ff] The subject-matter lofthe presentv inven-f` i ti oiirelates to game apparatusand vspecilically has to do witli an vimprovedmallet head used in connection with ythe gaineternied f P'ony 'Heretofore, it hasbeencustomary to con- One of thecliiefobjects of the present iiiv eiition1 is to provide aimalletliead which possessessulficient -bodyweight lfor the purwitliou't experiencing undue wear.

Another `aim is'to provideaj-"mallet"head which is composed of relatively hard rubber 'ohaving,` cavities or` chambered portions adapted Ito receive an expandablehiluid, such as air,`for the purposeof rendering the saine relatively 'stiff for the ypurposes indicated;

' The inventioniisffurther featured by the arraiigementfof .thev cavities with in,the body Y portion `of the head wherebythe striking-,or 1' central portion-of the latter ispreseiitedto have sufficient strength to enduretlie shocks to which it is subjected. i,

30, An importmirobjeet of they invention ism" providean inflatableirialletiheadand whose inflation serves 4to anchorfa Yinallet shaftfor' l. handle thereiiif i i Still. another object is to provide means 5 whereby an expandable fluid,` sucli as `air,

be enteredinto the cavities of the head i Hated aiidniaintainedin a rigid and vstiff con` yfor the purposes specified; herein-. 4

ma and7 maintained therein, underv pressure. l/Vitli these objects iii-view, together with others which will appear as thel description fio proceeds, the invention' resides in the-novel formation, combination,` and arrangement of. parts, all as will be described more fully hereinafter, illustrated inthe drawingand particularly pointed out inl the 'claims.

In said drawing: i

Fig. is a central longitudinal ysectional view of a inallet head constructed in accordance Vwith my invention. 1

.i Fig. 2 is a transverse sectionalview taken 5to on the line'2;2of Fig. 1, i l 'i l poses to: which itE is put arid'which isfsuili-- ciently lresilient tof` absorb repeated blows i ."Ch'embe? beingiclosdby .a cap i5, which provided with` a' bore '16, whereby a clear v Fig.- a'is a entrailongitudinal seetioimif v View 'of agslightly `modified forin of Inallet'l l vF4 is a fragmentarysecti i i nal view tf1-keu.'A l

accompanying drawing, wherein like char- 'acters' yofreference'l denotefsimilar' p a'its throughout' :the Severaiviews, iet. `5 indicate( thebotdy portion'of a mallet head, as shown my in Figs'.` l` and 2, wherein it, will be observed Saidlbody POFOII presentsaudoubletperng "To" orinationextending infoppositedirections y from 'the `central orV striking portion'of` said head, lsaid head having the usualopening '6l 65 forthe reception'of a shaftorlhandle,`i(not shown) As' "inentione'dj "hereinbef'ire,said head isto be constructed of resilient and einv pandable material, suchfas rubber," andthe v f general fabrication may bes'omewhatsiinilar19. to that employed in the manufacturelof aut'o-` i mobiletires-andasshownin Fig.` 2, a layerl 7` ofcanvasmay beie'mbeddedinthematerial, j or a pluralitythereof;'sothatsoine reinior'ce-k Ament may be ypresent'to resistundue expaiif` `sion of sai'fdhe'ad when vinflation occurs; i Said head isprOVided with cavities 8 and` 95,] i `each leading fromtlieeiids ofsaidhea'd: and each terminatinginfspaced r'el'atioi'i"tofsaicl opening`6, as' shown inF ig. l, saidcavities s "having theiryeiids se al edj-byvalv`e elements 10 and `1 1` l 'In Viewqof' the laforesaid Ear 1: rangementiit willbe seen that Chambers aref* d e'ned'witliin'thebody portion of saidhead,

said chambers beingadapted to'receive air,"e5

under pressure, whereby said head 'isfindition,

prises albody portion "12, having a boreglS- extending intattacoaxial chamber 14, sa'id passage. is Vhad'longitudiiially ofsaid` body lportion l2 and-cap15.11` Theinsertion of a y krv'no'zzleof,an'airfline 'causes the ball-valve 17. i i

to be unseated.` fromthefpositionshownlinv 7 Fig. 1", thus ,permitting the passage of 'the-airy i i o v through the boresand'chainber tothecavities '109 "Referring now/more in' particularto-the.i`

`Within vsaid head portion. When` suiicient air has been introduced, the nozzle is removed seen that this inflation of ythe body portion` causes suiicient expansion thereotwhereby f the valve elenie'ntsarefsecurely` positioned ausv .indicated and whereby the handle inserted in rangement of parts may be resorted'to With#- outV departing from thespirit of the invention 'as defined in theappended claims.

the opening 6` is lirmly held in place. i

In Figs. Sand 4, I haveshown aslight modification Whereinv a single valve element 18 is'employed.` This valve element issimilar to the ones just described and hence the same "material and presenting a chamber and a cavreferencenumerals have beenappli'ed. The

' y bodyportion 19,r having the usual opening 20 for the receptiono'f a handle, is provided with a chamber' Ql'at` one end anda cavity 22 at-the other extremity, the latter being sealed by the valve element-18, asexplained herel inbejfore.l ,y AsaV` single valve. element is employed itis necessary to provide means for,v

the vpassage of the in'flating vfluidfrom the 'cavity 22 to the` chamber 2l, said means in,-

cluding a lbore 23 and bore24, Which extend tively, both entering annular groove 25l arf l y ranged in the `Wall of said opening 20.",

Y 'It is obviousthat when av handle is inserted in the opening QOthat'groove 25now Vpresents passageway `which cooperates ,with

v saidboresQB and 24 to ajliord communica'- tionlbetWeen said chamber and. cavity P0 'and it is manifest; thatras theball valvjeQl'? ,is unseated'by the entrance of the air through the valve element l18,-,asaforesaid, saidgair eventually fills both thefcavityand chamber and when ,suiicientjair,-hasbeen ,introduced said head l9is expanded yand stiil-en ed, Whilst, ',themateri-al of, the head adj a'fcent the centrall portion thereof. tightly. embracesthe `'han dle Which Will be inserted in saidopening 20. '.Obf

I yiously, thisengagement precludes the dan-` l lver ofthet escape ofthe air atfthispoint of Contact. L

From the n have provided an article Which is admirably adapted toserve its purpose.y Thefheadis 1A55 'I l tionof a handle therein, there ,being il-bore- 'oregoing; it will beseen tendent deteriorating 'effect'.

yVVhilethe present isa disclosure of the preferred embodiments of the invention, it is tovbe understood` that theinventiuonis not liml ited t lie r etoasY various changesin the minor details of construction, prop'ortionand ar- ;I claim: l

l. A `mallet head composed of expandable ity therein,ftliere beingvan openingingsaid headA for the receptionV of a handleanda|` groove arranged inthe Walls of said opening, eachof vsaid chamber;and..cavity'being in communication With said groove When a-han- Yidle is inserted in .s'aidopening and means po'- sitioned in `saidcavlty whereby an expandable iluid may be passed tosaid cavity. and `into said chamber to st iii'en vsaid head and tofeX pand Vthematerial adj acent said opening. g l

2. Avpony polomallet headofftheY class described, Composed of eXpandablemafterial 1 and presenting internally thereof ak chamber and aV cavity arranged; in' spacedllongitudinal relationin the opposite ends of saidhead and having an ,,angular opening centrally and transversely arranged inl said head ybetween y said chamber and ysaid for thedrecep.- c

providing communication to from said 'chamberl o and l,said cavity. when ,said handle has been ,inserted vvithin said angular opening,valveimeans positioned .atone endlof said l head, coinmunicatingiivith sa'idjcavity, ivhereby `an eXpanable fluid, ,runder pressure, may

' enter= said cav-ity ,andv therefrom pass4 through said bore. into saidfnchamber, thus inlating both Chamberland cavity evenly, andthereby l providing a `irin and'air-tightgrip upon vvthe inserted portion of saidA handle, thus causing an'infiatlon oiiaf'suifimency in said chamber f and .said cavity to maintainfthe -exterior conf- 1 tour ofsaid head b'y"`said=inf lation. 1 f, 

